help ADS time 24

[hammerfall]

For example X user registers on March 23, 2008 and I do not want to see advertising, but the last 24 hours after the registration becomes whether the March 24, 2008 since it appears there are ads

As I do that?

thanks

I speak little English sorry 

[vbgamer45]

So do want new members to see advertisements after the first 24 hours they signup on the forum but after that trial period advertisements are then shown?